3635661061 has 8 divisors (see below), whose sum is σ = 3698903384. Its totient is φ = 3572536320.

The previous prime is 3635661041. The next prime is 3635661103. The reversal of 3635661061 is 1601665363.

It can be written as a sum of positive squares in 4 ways, for example, as 1446356961 + 2189304100 = 38031^2 + 46790^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3635661061 - 2¹⁹ = 3635136773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3635661061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3635661011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34165 + ... + 91861.

It is an arithmetic number, because the mean of its divisors is an integer number (462362923).

Almost surely, 2^3635661061 is an apocalyptic number.

It is an amenable number.

3635661061 is a deficient number, since it is larger than the sum of its proper divisors (63242323).

3635661061 is a wasteful number, since it uses less digits than its factorization.

3635661061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58791.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 3635661061 is about 60296.4431869741. The cubic root of 3635661061 is about 1537.6628771947.

The spelling of 3635661061 in words is "three billion, six hundred thirty-five million, six hundred sixty-one thousand, sixty-one".